I'm guessing that means it works :)
-MG
On Jan 25, 2010, at 3:50 AM, Mehmet Akcin wrote:
Michael,
I forgot to reply you saying thank you for this, but here it goes
THANK YOU heh.
mehmet
On Jan 11, 2010, at 1:59 PM, Michael Graziano wrote:
Mehmet -
It sounds like what you're looking for is more of a generic "Verify
DNS is synchronized" probe as opposed to the current DNS probes
which fire a query at a single NS and make sure the response is
what's expected. Intermapper's design isn't really geared for that
since each probe asks a question of it's specific device (this test
by its nature needs to query N devices - all the listed nameservers)
This is a pretty common problem though, common enough that it's
pobably worth having a probe for.
Since it gives me an excuse to play with the new 5.2 command-line
probe bits I came up with the attached: Just stick it on a device
that's an authoritative NS for the zone & make sure the domain name
(zone) is set correctly in the probe parameters.
Caveats:
- Any difference in the SOA is an error (your SOAs should match
exactly anyway or you're doing DNS wrong :)
- Only reports the first SOA mismatch it finds
- Only works on InterMapper 5.2 (uses the <tool:> section)
- Probably only works on Unix hosts (Tested on FreeBSD, Probably
works on Mac/Linux without changes).
- May cause REALLY LONG reason strings in your status window
(No other way to display the script output / list of checked
servers - ?)
Improvements welcome. This is a pretty ghetto 10 minute
implementation...
-MG
<net.bsd-box.cmdline.dns.soa>
On Jan 11, 2010, at 12:56 AM, Mehmet Akcin wrote:
Bill,
I am trying to achieve following, have intermapper two different
digs , one - dig @master-dns-server-address . SOA grab the serial
"2009081901" and other dig @slave-dns-server-address . SOA and
grab the serial from there, if they match everything is great. If
the serial # in master > slave --- there is mismatch and for some
reason the slave dns server is not updating in timely manner.
I believe this would have been an awesome feature if Intermapper
could provide as a feature , mis-matching SOA on master and slave
(s) is a very important thing that needs monitoring for many .
insert your peer-pressuring supportive words here <<< :)
cheers
Mehmet
On Jan 10, 2010, at 3:12 PM, William Fisher wrote:
On 1/9/10 3:12 PM, Mehmet Akcin wrote:
I am trying to build a custom DNS Probe which would check the
SOA for domain "example.com" on server1 and if matches with the
SOA for domain "example.com" in server2 , it would be a happy
probe:)
any ideas if anyone has done something with SOA's before?
I see the DNS related probes dont contain SOA but other record
types such as A/MX etc, is there a way to get the editable
format of the DNS Probe to play and modify... this is if
acceptable...
The editable content of the DNS probes is in the
BuiltInProbes.zip file in the "InterMapper Settings/Probes"
directory. However, when you look at the content of the DNS
probes, you are going to see that there are only two sections:
header and parameters, and the probe's type is "built-in". The
DNS probes are implemented in C++ code that is linked within
InterMapper itself. There is no way to write a custom UDP probe
at this time.
I am interested in what you are trying to do. To make sure I
understand, please describe the logic of the probe. Given a raw
SOA response of the following format, what do you want to check?
(the fields are domain, email, serial number, refresh, update
retry, expiry, minimum)
ns1.example.com. dns.example.com. 2009081901 3600 900 864000 43200
Thanks,
--
Bill Fisher
Dartware, LLC
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